I made a 4x2x3 NIC cube condo for our new bunny with 3 levels. The bottom level is sitting on top of a rug and the other 2 levels are wood. What should I put on the floor of the 2 upper levels with to make them comfortable and inviting for our bun? So far he hasn't ventured up to the other levels. Should I use towels? fleece? carpet? How do I attach it to the wood?
Thanks for any input. I can post pictures too if that would help.